Typewriter attachment



y 1935- I c. L wiNTER TYPEWRITER ATTACHMENT Filed Sept. 19, 1954 2 Sheets-Sheet l Patented May 14, 1935 PATENT orrics l TYPEWRIT'ER ATTACHMENT Charles L. Winter, Chicago, Ill., assignor to United Autographic Register 00., Chicago, 111., V a corporation of Illinois 1 Application September 19, 1934, Serial No. 744,716

7 Claims. (01. 197-126) This invention relates to typewriters adapted to fill in forms on continuous-form stationery, and more particularly to an improved device for holding carbon-strips interleaved with the sta- 6' tionery strips while the completed set of forms is advanced beyond the area served by the carbonstrips. a

The primary object of the invention is to provide a carbon-holder which is movably mounted in rear of the' platen so as to move forwardly with the stationery, and to provide means for holding the carbon-holder in its rearmost position to facilitate the transfer of the carbon from an advanced to a succeeding set of forms.

A further object of the invention is to provide a machine with a depressible member which is adapted to be automatically actuated by the stationery and serves to release the carbon holder' for forward movement.

A further object of the invention is to provide an improved method of manipulating interleaved carbon-strips in continuous-form stationery.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which Figure 1 is a side elevational view of a machine embodying the invention and applied to a typewriter which is indicated by dotted lines; Fig. 2 is a broken plan view of the same; and Fig. 3 is a broken elevational view showing the carbonholder tilted up by the pressure of the strips to permit the carbon-strips to be advanced with the stationery.

In the drawings, A designates a supporting plate upon which all or a portion of a typewriter machine may be rested, and is equipped at its rear end portion with a transversely extending track A; B is a traveling support to which is pivotally connected a carbon-holder B; and C is a depressible release member for raising the carbon-holder B to permit forward movement thereof.

The supporting plate A may be of any suitable material and shape, but preferably is equipped with sockets 4 to receive the legs of the typewriter, which is indicated by dotted lines, and holds the track A in proper position with respect to the machine.

The traveling support B comprises a frame having side members 5 held in spaced relation by means of cross rods 6. The frame may be rigidly connected to the platen carriage by means of downwardly and forwardly, extending arms I which are rigidly mounted on the frame by means of screws 8. The arms are further provided with a cross bar 9 which limits the downward travelof the member C. The frame, preferably, slides on the rail A. However, if desired, the frame may be supported entirely by the platen carriage. The carbon-holder B is pivotally connected to the frame by means of a cross bar 5 and comprises pivot arms It which. are equipped at their rear end portions with a guide plate i i provided withupwardly extending guide fingers !2. The plate I! is also equipped with upwardly extending studs I3, upon which may be mounted cantilever carbon-supporting blades i l. The pivot, arms I!) are connected by means of cross rods. iii and a torsion spring it having a rearwardly extending arrnll engages one of the rods l5 and urges the carbon-holder to its rearmost position.

When the carbon-holder is in the positionshown in Figs. 1 and 2, it will be seen that a straightforward pull on the strips it! will not lift the carbon-holder sufficiently to enable it to travel forwardly with the stationery. Therefore, whenit is desired to strip the carbon back into the next succeeding set of forms in the strips 83, it is merely necessary to back up the platen roll and pull the strips forwardly one form length While the carbons are held by the carbon-holder. In order to automatically raise the carbon-holder during the next writing operation, the depressible release member 0 is provided. The member comprises a pair of S-shaped members !9 which are pivotally connected to the frame B by means of the cross rod 20 and machine screws 2|. The rear end portion of the members l9 are curved downwardly and connected by means of a cross rod 22 which is disposed beneath the arms 10. The downward travel of the arms i 9 is limited by the rear cross bar 6. The front end portion of the S-shaped members are connected by means of a cross bar 23 and support on their extreme front end portions 2. cross bar 24, equipped at its end portions with upwardly extending guide fingers 25. To load the machine the stationery strips are passed over the carbon-holder so that the forwardly extending carbon strips are held in interleaved relation by means of the blades M. The leading ends of the loaded strips are inserted between the platen-roll and feed-mechanism and may be drawn forward thereby. When the front ends of the carbons are gripped and advanced they are placed under tension and exert a down- Ward transverse pressure on the cross bar 24 which causes the carbon-holder to tip up above the pivot 2| and swing forwardly with the stationery. After a set of forms has been filled in the strips may be backed out from under the platen-roll and 1. In combination with a typewriting machine equipped with strip-feedingmechanism; a forwardly movable carbon-holderdisposed in rear of the strip-advancing mechanism; means for holding said carbon-holder in retracted position;

and release-means for permitting forward movement of the carbon-holder, said release-means being depressible by the pressure of strips tensioned by said feed-mechanism.

2. 'In combination with a typewriter equipped with a platen-roll and feed-mechanism for advancing stationery strips interleaved with carbonstrips around said roll: a forwardly movable carbon-holder disposed back of said roll; means for holding said carbon-holder in retracted position; and a depressible member for releasing the carbon-holder for forward movement disposed in the path of said strips, said member being depressed automatically when the strips are tensioned by the feed-mechanism. J

3. In a machine of the character set forth: a base plate, upon which a typewritingmachine having a shiftable platen carriage may be placed, said plate having an upwardly extending support at its rear portion provided with a transversely disposed track; a carbon-carriageslidably mounted on said track and having forwardly extending arms adapted to engage said platen carriage; a forwardly movable carbon-holder mounted on said carbon-carriage; means for holding said carbon-holder in retracted position; and releasemeans for permitting forward movement of the carbon-holder, said release-means being depressible by strips advancing to the platen-carriage.

4. In combination: a typewriting machine having a main frame and a platen to which stationery strips interleaved with carbon-strips may be led; a carbon-holder pivotally mounted in rear of said platen; means for holding said carbon-holder against oscillation; and actuating means for releasing the carbon-holder,including an arm depressible by the strips.

5. In combination with a typewriter equipped with a platen-roll and feed-mechanism for advancing stationery strips interleaved with carbonstrips around said roll; a carbon-holder pivotally mounted back of said platen-roll; and means dis- ,posed between the platen-roll and carbon-holder for partially oscillating said carbon-holder about its pivot, said means being actuated automatically by transverse pressure of the strips.

6. Mechanism as specified in claim 5,-in which the means for oscillating the carbon-holder comprises a pivotally mounted guide-frame having a front end portion depressible by the strips and the rear end portion is adapted to move the carbon-holder upwardly.

7. In the production of multiple copiesfrom continuous-form stationery-strips and leaved carbon-strips, the method which comprises: yieldingly holding carbon-strips in inter leaved relation with stationery-strips to permit said carbon-strips to move forwardly therewith; holding the carbon-strips to facilitate stripping therethrough; drawing the fresh stationery into writing position and in engagementwith a depressible release-member; and automatically releasing the carbon for forward movement by having the strips depress said member.

CHARLES L. WINTER.

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